Folding box.



v G. W. ELSON.

- FOLDING BOX. APPLIOATIONII'LED JAN. 17, 1908.

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CARL W. ELSON, OF GRAND RAPIDS, MICHIGAN.

FQLDING BOX.

.pplication filed January 17, 1908.

Specification of Letters Patent.

Patented Nov. 3, 1908.

Serial No. 4:11,26.

To all whom it may concern:

citizen of the United States of America, re-

siding at Grand Rapids, in' the county of Kent and State of Michigan,have invented certain new and useful Improvements in Folding Boxes; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same.

My invention relates to improvements in folding boxes and its object isto so construct the same that the ends and sides will show no seamsexcept at the corners; to provide a structure that will be substantialand rigid when formed up for use, with the fastening or locking meansWholly upon the inner side of the same; and to provide the device withvarious new and useful features hereinafter more fully described andparticularly pointed out in the claims, reference being had to theaccompanying drawings, in which:

Figure 1. is a perspective view of a device embodying my invention as itappears when arranged for use; Fig. 2. the same before it has beenformed up for use and shown on a reduced scale; and, Fig. 8. a detail invertical section on the line 3-3 of Fig. 1.

, Like numbers refer to like parts in all of the figures.

The device consists of a flat sheet of .paste board or other suitablematerial, scored on thevarious lines shown by dotted lines in Fig. 2. toprovide for folding at right angles on these lines. The rectangularportion 1 forms the bottom of the box, the lateral extensions 2 2 formthe sides of the box, and

similar end extensions 3 form the ends of the same when arranged foruse, these sides and ends being connected to the central portion at oneside only and adapted to be folded upward at right angles to form therespective sides and ends of the box.

To secure the sides and ends to ea ch other, the ends 3 are providedwith extensions of substantially the width of the ends 3 and adapted tofold inward and downward upon the inside of the box. These extensionshave their outer corners beveled at about thirty degress and are dividedbydiverging slots 8, thus forming a central dovetail part 4: havingacute angles, and tapered tongues 5 hav- I' ing obtuse angles. The sides2 are provided I with end extensions 6 severed from the ends 3 byparallel slots 9 and adapted to fold at right-angles to the sides 2 andextend along the inner surfaces of the ends 3 when the sides and endsare turned to vertical position. These extensions 6 are provided withopenings 7 to receive the tongues 5 and also overlap the angles of thedovetail central part 4, thus locking the device in folded position.When formed up as shown in Fig. 1., the ends present a rigid roundedupper edge, the outside of the box being smooth and showing only avertical seam at each corner, 7 strong and secure, and also whollywithin the box where it is not exposed to accidental detachment, and issecurely held in place by engagement with the contents of the box.

What I claim is:

1. A folding box comprising a rectangular central portion, sides andends integral therewith, extensions on the ends each extension. havingtapered tongues with obtuse angles and a dovetail central portion havingacute angles, and end extensions on the sides having openings to receivethe tongues and overlapping the angular portion of the dovetail. middleportions when the device is assembled for use.

2. A blank adapted to forth a folding box comprising a rectangulariiddle portion, side and end portions integral therewith and adapted tofold at right angles thereto, an extension on each end at the sideopposite the middle portion and adapted to fold upon the inner surfaceof the end, said extensions having beveled corners and diverging slotsforming each extension into two outer tapered tongues having obtuseangles and a mitlldle dovetail portion having acute angles, enc

extensions on the sides and separated from the ends by parallel slotsand also pro vided with openings to receive the tongues and adapted tooverlap and hold the dovetail portion when the device is arranged foruse.

In testimony whereof I afiix my signature in presence of two witnesses.

CARL W. ELSON.

Witnesses:

LUTHER V. hlonnrox, GEORGIANA Onilonr the locking means being quite

